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`Nullable<ClientType>` currently allows specifying either a concrete client type or all client types, but does not support more flexible scoping options. `ClientStorageScope` is designed to address that limitation, with future support planned for special purpose scopes, such as locking the metadata file shared by client directories. This patch updates existing code, particularly around directory locks, to use `ClientStorageScope` in place of `Nullable<ClientType>`. Support for additional scope types will be added in a follow-up patch. This patch focuses on transitioning to the new abstraction. Differential Revision: https://phabricator.services.mozilla.com/D243630
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DOM_QUOTA_UNIVERSALDIRECTORYLOCK_H_
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#define DOM_QUOTA_UNIVERSALDIRECTORYLOCK_H_
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#include "mozilla/dom/quota/Client.h"
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#include "mozilla/dom/quota/DirectoryLockImpl.h"
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#include "mozilla/dom/quota/PersistenceType.h"
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template <class T>
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class RefPtr;
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namespace mozilla {
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template <typename T>
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class MovingNotNull;
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} // namespace mozilla
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namespace mozilla::dom {
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template <typename T>
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struct Nullable;
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} // namespace mozilla::dom
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namespace mozilla::dom::quota {
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class ClientDirectoruLock;
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enum class DirectoryLockCategory : uint8_t;
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struct OriginMetadata;
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class OriginScope;
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class PersistenceScope;
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class QuotaManager;
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// A directory lock for universal use. A universal lock can handle any possible
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// combination of nullable persistence type, origin scope and nullable client
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// type.
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//
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// For example, if the persistence type is set to null, origin scope is null
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// and the client type is set to Client::IDB, then the lock will cover
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// <profile>/storage/*/*/idb
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//
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// If no property is set, then the lock will cover the entire storage directory
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// and its subdirectories.
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class UniversalDirectoryLock final : public DirectoryLockImpl {
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friend class QuotaManager;
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public:
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using DirectoryLockImpl::DirectoryLockImpl;
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RefPtr<ClientDirectoryLock> SpecializeForClient(
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PersistenceType aPersistenceType,
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const quota::OriginMetadata& aOriginMetadata,
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Client::Type aClientType) const;
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private:
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static RefPtr<UniversalDirectoryLock> CreateInternal(
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MovingNotNull<RefPtr<QuotaManager>> aQuotaManager,
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const PersistenceScope& aPersistenceScope,
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const OriginScope& aOriginScope,
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const ClientStorageScope& aClientStorageScope, bool aExclusive,
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DirectoryLockCategory aCategory);
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};
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} // namespace mozilla::dom::quota
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#endif // DOM_QUOTA_UNIVERSALDIRECTORYLOCK_H_
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